Thank you. The latest version from windows.php.net is running on the server. But there is no php5apache2_4.dll in the download.
Is there no need for that library? If so, why would this new apache24 server not serve up PHP files? What is now needed for Apache24 to run PHP files?

Yes, but if was running a basic Apache PHP server I would have thought that non-thread safe would be more appropriate. Regardless, switching to thread-safe PHP 5.6 seemed to work. Thanks for the pointer.